Energy-efficient ventilation system

Details Energy-efficient ventilation system Energy-efficient ventilation system

F - Mech Eng,Light,Heat,Weapons

24

F

F24F 12/00 (2006.01) F04B 45/02 (2006.01) F04B 45/04 (2006.01)

Patent

CA 2108285

2108285 9218814 PCTABS00017 A ventilation system for extracting warm, stale air from a building and transferring heat therefrom to incoming colder, fresher air comprises exhaust bellows (14) for extracting the stale air through a counterflow, high pressure drop heat-exchanger (18), and intake bellows (26) for driving fresh air through the heat-exchanger (18) into the building. Each bellows (14, 18) comprises two pivotally-mounted, perforated bellows plates (46, 54) each covered by a resilient membrane (48) having non-registering perforations. The movement imparted to the plates (46, 54) by the profiled cam wheel (36) is such as to cause a steady flow of air therethrough. Alternatively the pivotal bellows (46, 54) may be replaced by two pairs of rolling-membrane piston type bellows (131, 132), each pair being driven by respective face cams (130) mounted on a common shaft (118).

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